Fill valve



FIG. 1 is a side elevational view of a fill valve embodying the design of my invention;

FIG. 2 is an end elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is an elevational view taken from the end opposite that shown in FIG. 2;

FIG. 5 is an elevational view taken from the side opposite that shown in FIG. 1; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a fill valve, as shown. 